One of our favorite things about working in the world of aviation is the alphabet soup of airport identifiers we encounter every day.

Some of us at AC-U-KWIK proudly reminisce about the first time we remembered that SUS is shorthand for Spirit of St. Louis Airport or that HPN is another way to say White Plains, N.Y.

When we came across this piece about airport code history, we had a good excuse to ponder the puzzles of airport codes that appear to be assigned without rhyme or reason.